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Mount Merapi

Minggu, 27 Maret 2011 - - 0 Comments

For the name of the mountain in West Sumatra with a similar name, see Mount Marapi.
Merapi Altitude 2968 m (9737 ft) Sign Thousand, Type A volcano
Location Location Klaten, Boyolali, Magelang (Central Java), Sleman (Yogyakarta) Coordinates 7 ° 32'30 "S 110 ° 26'30" E Geology Type stratovolcano
The last eruption 2010

Merapi (peak height of 2968 m above sea level, as of 2006) is a volcano in the central part of Java Island and is one of the most active volcanoes in Indonesia. Slopes of the south side are in the administrative district of Sleman, Yogyakarta Special Region, and the rest are in the region of Central Java province, namely Magelang district on the west side, Boyolali district in the north and east, and Klaten district in the southeast. The forest area around the peak to be Mount Merapi National Park area since 2004.

The mountain is very dangerous because, according to modern records have eruption (peak activity) every two to five years and is surrounded by very dense settlement. Since the year 1548, this mountain has erupted 68 times as much. [citation needed] The city of Magelang and Yogyakarta City is the nearest big city, is under 30 km from the summit. On the slopes there is still a settlement to a height of 1700 m and only four kilometers from the summit. Because of this importance, Merapi became one of sixteen volcanoes of the world are included in the Decade Volcanoes project (Decade Volcanoes).

Geology
Mount Merapi is the youngest mountain in the volcanic chain that leads to the south of Mount Ungaran. The mountain is formed by the subduction zone activity in the Indo-Australian Plate is moving down the Eurasian Plate led to the appearance of volcanic activity along the middle of Java Island. Current peak is not overgrown vegetation because of high volcanic activity. This peak grows in the southwest side of the peak of Mount Batulawang older. [2]
The process of formation of Mount Merapi has been studied and published since 1989 and so on. [3] Berthomier, a French scholar, divided into four stages of development of Merapi. [4] The first stage is Pre-Merapi (up to 400,000 years ago), namely Gunung Bibi parts can still be seen on the eastern side of the peak of Merapi. Old Merapi stage occurs when Merapi began to form but not yet conical (60000-8000 years ago). The remains of this stage is Turgo Hill and Hill Plawangan in the south, which is formed from basaltic lava. Next is the Middle Merapi (8000 - 2000 years ago), characterized by the formation of high peaks, like Mount Gajahmungkur and Batulawang, which is composed of andesite lava. The process of formation in this period is characterized by lava flows, brecciation of lava and hot clouds. Merapi activity has to be effusive eruption (melt) and explosive. Also estimated that an explosive eruption with debris material to the west that left the horseshoe morphology with length 7 km, 1-2 km wide with a few hills on the western slope. Crater Pasarbubar (or Pasarbubrah) is estimated to form at this time. Merapi peak now, peak Anyar, a new beginning to form around 2000 years ago. In its development, is known to occur several times explosive eruption with VEI 4 based on the observation tefra layer.
Characteristics of eruptions since 1953 is the insistence of lava into the summit crater accompanied by periodic lava dome collapse and pyroclastic formation (nuee ardente) that can slide on the slopes or vertically upward. The eruption of Merapi type is generally not a sound but the hiss of explosions. Dome of the existing peak until 2010 was the result of an ongoing process since the gas explosion of 1969. [2]
Geologists in 2006 detected a giant space below Merapi contain materials such as mud that are "significantly impede the vibration waves of an earthquake." Scientists estimate that the magma material. [5] Pouch magma is part of the formation formed by menghunjamnya Indo-Australian Plate under the Eurasian Plate [6].The peak of Merapi in 1930.
Small eruptions occur every 2-3 years, and the larger about 10-15 years. Merapi eruptions recorded a big impact in the year 1006 (allegations), 1786, 1822, 1872, and 1930. The eruption in 1006 made the whole central part of Java island shrouded in ash, based on observations of volcanic ash heap. [Citation needed] Dutch geologist, van Bemmelen, theorized that the eruption caused the central Medang Kingdom (Ancient Mataram) should move to East Java. The eruption in 1872 is considered as the most powerful eruption in modern geological record with VEI scale reaches 3 to 4. The latest eruption, 2010, is estimated to also have the power close to or equal. The eruption in 1930, which destroyed three dozen villages and killed 1400 people, is the biggest victims of the eruption with the record until now. [Citation needed]
November 1994 eruption caused hot clouds glide down to reach some villages and claimed 60 human lives. July 19, 1998 eruption is big enough but it pointed up so it does not take casualties. Note the last eruption of this mountain was in 2001-2003 in the form of high activity are ongoing. In 2006 Mount Merapi high-return activities and had claimed two lives of volunteers in the region because of a hack Kaliadem hot clouds. The series of eruptions in October and November 2010 were evaluated as the largest since the eruption in 1872 [7] and claimed lives of 273 people (as of 17 November 2010) [8], although it has applied intense observation and preparation for evacuation management. The eruption of 2010 also observed as a deviation from the eruption "Merapi type" because it is accompanied by explosive blast and the rumbling sound is heard up to a distance of 20-30 km.
The mountain is monitored non-stop by the Centre for Observation of Mount Merapi in Yogyakarta, assisted by various geophysical telemetry instruments around the mountain peak and a number of visual observation post and seismic recorder in Ngepos (Srumbung), Babadan, and Ground.[Edit] 2006 eruption
In April and May 2006, began to appear signs that Merapi will erupt again, characterized by earthquakes and deformation. The local government of Central Java and Yogyakarta have prepared evacuation efforts. Instructions have also been issued by the two governments so that people living near Merapi immediately flee to places that have been provided.
On May 15, 2006 finally Merapi erupts. Then on June 4, reported that the activities of Mount Merapi has exceeded the alert status. Head BPPTK Yogyakarta, Ratdomo Purbo explained that approximately 2 to 4 June the volume of lava in the dome of Merapi has reached 4 million cubic meters - that lava had fulfilled all the Merapi dome capacity so that additional new lava burst will directly out of the dome of Merapi.
June 1, rain of volcanic ash from Mount Merapi hot clouds glide a dense, three days later this happened in the town of Magelang and the District of Magelang, Central Java. Muntilan about 14 kilometers from the summit of Merapi, most feel the rain this ash. [9]
June 8, Mount Merapi erupted at 9:03 pm with a blast of hot clouds that made thousands of residents in the area of ​​the slopes of Mount Merapi to panic and try to escape to safety. Today, carrying two eruptions of Merapi, the second eruption occurred at around 09:40 pm. Bursts of heat clouds as far as 5 km more to Kali Gendol upstream (south slope) and sear some forest areas in the north of Kaliadem in Sleman regency. [10][Edit] 2010 eruptionThe main article for this section are: The eruption of Mount Merapi 2010
Upgrading of the "normal active" to "alert" on 20 September 2010 recommended by the Center for Investigation and Technological Development Kegunungapian (BPPTK) Yogyakarta. After about a month, on October 21, status changed to "alert" since at 18:00 pm. At this level of displacement has to be prepared. Due to the increasing activity, indicated by the high frequency multiphase earthquakes and volcanic earthquakes, since 06.00 am tangggal October 25 BPPTK Yogyakarta recommends increasing the status of Mount Merapi to "alert" and all the inhabitants of the area within a radius of 10 km from the summit should be evacuated and evacuated to an area safe.
The first eruption occurred at around 17:02 pm on 26 October. At least going up to three times the eruption. Material spewing volcanic eruptions as high as approximately 1.5 km and is accompanied by the release of heat clouds which swept Kaliadem, Kepuharjo Village, District Cangkringan, Sleman. [11] and taken the lives of 43 people, plus a baby from Magelang who died because of respiratory problems.
Since then began to vomit hot clouds occur irregularly. Starting October 28, Mount Merapi spewed lava that appeared almost simultaneously with the discharge of hot clouds at 19:54 pm. [12] Next start hotspots silence was observed at the peak on November 1, marking a new phase that the magma has reached the pit crater.
However, different from the character of the Merapi typically, rather than the formation of a new lava dome, which in fact happened was increased activity bursts of lava and hot clouds since 3 November. Explosive eruptions preceded a major eruption on the morning of Thursday, November 4, 2010, resulting in column 4 km-high clouds and bursts of hot clouds in different directions at the foot of Merapi. Furthermore, since about three o'clock noon eruption that never stopped until the evening and reached its peak in the early hours Friday, November 5, 2010. Towards midnight, a radius danger to all the places enlarged to 20 km from the summit. This eruption sequence and a roar audible to the city of Yogyakarta (distance about 27 km from the summit), Magelang and Wonosobo regency center (distance 50 km). Rain gravel and sand to reach the city of Yogyakarta to the north, while the thick volcanic ash rains swept through Navan and Cilacap. At noon, volcanic ash is known to have reached Tasikmalaya, Bandung, [13] and Bogor. [14]
Secondary hazards cold lava flow also threatens the region lower after the November 4th place heavy rain around the peak of Merapi. On November 5, Code River in the city of Yogyakarta declared status as "alert" (red alert). [15] [citation needed]
Strong eruption 5 November followed by a high activity for about a week, before then there was a slight decrease in activity, but the security status remains "Beware". On 15 November 2010 to limit the danger radius of Magelang District was reduced to 15 km and to two other districts of Central Java to 10 km. Just for the district. Sleman which still remains the danger imposed radius of 20 km. [16][Edit] Vegetation
Mount Merapi at the top is never overgrown with vegetation due to high activity. Plant species at the top of the typical mountain-type alpina Java, such as Rhododendron and edeweis Java. Slightly down bamboo forests and the plants are tropical mountains.
Slopes of Merapi, especially below 1,000 m, is home to two national superior cultivars of salak, which is barked 'Pondoh' and 'Nglumut'.[Edit] Route ascent
Mount Merapi is the object of a popular climb. because this mountain is a mountain that is very charming. The most common route is through the side and near north of Selo, Boyolali regency, Central Java, precisely in the Village Tlogolele. The village is situated between Mount Merapi and Mount Merbabu. Climbing through Selo takes about five hours to the summit.
Another popular path is through Kaliurang, Pakem District, Sleman District, Yogyakarta on the southern side. This path is more steep and takes about 6-7 hours to the summit. Another alternative route is through the northwest side, starting from Sawangan, Magelang regency, Central Java, and through the southeast, the direction of pure-bred, Kemalang District, Klaten Regency, Central Java.

The advantages and shortcomings of the camera (digital) SLR

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Excess SLR Camera
Image QualityBecause the larger DSLR sensors, it tends to catch quality better than with compact cameras.
FlexibleDSLR lenses can be easily changed as needed.
SpeedDSLR faster in terms of shutter speed (the speed of catch picture), start up, and also shutter lag (time lag between pressing the shutter button until the image is stored).
Optical ViewfinderWith optical viewfinder, what you see in the viewfinder will be in accordance with the results that were recorded.
Wide ISO RangeISO setting (the sensitivity of the sensor on the light) has a wider coverage, making it more flexible shooting in all conditions even in low light though.
Manual ControlsAlthough in some compact cameras have been equipped with manual settings for taking pictures, but the number and flexibility of its more diverse in DSLR.
ValueDSLR cameras have seen leibih value of the compact camera. Because of its factors "expired" it is longer. Investment in the lens will not be spoiled because they can continue to be used.
Sharpness spaceOften called depth of field. With a DSLR, the space object image sharpness can be adjusted freely. With this feature could make a buddy picture with a sharp object and the background blurred.
Quality OpticsThe quality of a DSLR lens of course better with a pocket camera. In addition, the choice of quality varied, depending on the contents of a pocket pal.
Lack DSLR Camera
PriceDSLR cameras are more expensive than a pocket camera. But now there are entry-level DSLR class of its more affordable price.
WeightedThe size of its dimensions certainly bigger than a compact camera. Take it from the bag takes a few moments.
Need TreatmentThese cameras tend to need extra care. When pal-replace to replace the lens, there is the possibility of dust and kototran get into censorship, so the mate must be diligent in cleaning it so the camera is not quickly broken.
ComplexManagement and pengesettan DSLR cameras are more complex, because it is designed for manual shooting. But now many new digital SLR cameras that incorporate tambahanuntuk facilities management easy and automatic in it.
Targeting via ViewfinderMost digital SLR cameras LCD does not provide facilities for the target object, such as on a pocket camera. But some are now, already provide this facility through the Live View feature.

10 Tips how to Taking Better Pictures

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Many people think that they should memilikikamera expensive to take good photos, but the secret of taking good pictures, not the camera, it is the photographer. If you try these simple tips when using your digital camera, you'll be taking better pictures of whatever your subject.
1. Position your subject
Use the Rules of Thirds to make your photos more interesting. Imagine the scene divided into three parts, like a tic-tac-toe, horizontal and vertical. Position your subject at the intersection of the line will break symmetry and generate an attractive picture. If you do not get a perfect picture, you can cut with Photoshop. You should be able to get a free download for Photoshop at Adobe's website.
2. Select Backgrounds Right for Your Subject
simple background is best for subjects with busy patterns. You also can set the depth of field to focus on objects close to you while distant objects blurry. Simple subjects look best against a more detailed background. Make sure the background does not interfere and take attention away from the subject.
3. Create Distance and Dimensions
A photograph distant subjects can seem static and one-dimensional. Including subjects closer to you in your photos gives a sense of the distance. Blurred background focuses attention on your subject.
4. Select an orientation that Suits Your Subject
The camera produces a rectangular image that provides you with two orientation to work with vertical or horizontal. Your subject will lend itself to one or the other. One sure way to find out is just to take your photo both ways and decide which is best.
5. Use a Unique Point of View / Get Close to Your Subject
Break the habit of shooting everything from eye level. Experiment with the knees to catch the subject from near the ground, or photographing subjects above you. Get in close to your subject - close-up photography adds intimacy to your photos and help catch all the hidden details and moments you may never see. Learn Photoshop so you can edit, crop and enhance your digital photos.
6. Use your surroundings to frame your subject
Position the subject in front, window door interesting scenes, etc. to frame your subject, keep in mind Thirds Rule.
7. Avoid underexposed image
In the room - moving near a window or bring light into the room. Move closer to your subject. Manually adjust the shutter speed on your camera. Change the exposure settings. For a lighter photo, adjust the exposure up, to a darker picture, adjust the bottom. You can see what your picture will look like when you adjust these settings
8. Avoid too bright picture
On sunny days, find a shady spot with the subject of your photo and use the flash which will cast an even light over your subject. Take advantage of overcast day to avoid shadows. When inside the room, providing natural light as much as possible avoid the use of flash which can wash out colors and shadows are harsh. Avoid the midday sun, morning and late evening times better for photography.
9. Avoid Red Eye
Turn off your camera flash or if it's too dark to go without the flash, ask your subject to look into the camera, but not directly on the lens. By taking photos during the day, you may eliminate the need for flash. Bring in additional light sources if necessary. Try to stand far away from your subject. If you try all this and still have red eyes, try to use Photoshop to edit your photos.
10. Avoid Blurry Photos
Avoid shutter lag by pressing the little button before you shoot. When you are ready to take a picture, press all the way down to instantly capture the desired image. Use a tripod or brace yourself against a stationary object to hold the camera still. If the subject moves, use the action mode on your camera. Action settings automatically optimizes the shutter speed to take action.
The best way to learn to take good digital photos is to require lots and lots of pictures. You can only delete what you do not want. Learn Photoshop so that you can to make corrections, enhance your image, and use special effects to make your digital photos look like pro's.

Extinct Animals found in Still Life

Minggu, 20 Maret 2011 - - 0 Comments

They are called "Lazarus species" - a creature that has disappeared, sometimes for millions of years, only to miraculously re-discovered again in modern times. This species can survive. Here is a short list of 14 extinct animals, which in fact, have been found again.

   
01. Coelacanth
 

 Coelacanth is an ancient order of fish believed to have been extinct in the late Cretaceous period 65juta years ago. That was until 1938, when one miraculously found off South Africa's east coast near the mouth of the River Chalumna. Closely related to lungfishes and tetrapods, the oldest living coelacanth is not known to exist. They can live for 100 years and swam at a depth of 90-100 meters.



02. Bermuda Petrel

Rediscovery of Dramatic Bermuda Petrel has been one of the most inspirational story in the history of nature conservation. Extinct for 330 years, the birds have not been seen since 1620. Then, in 1951, 18 pairs found in a remote coral island in the Port of Fort. Nevertheless, they still struggle today with the extinction of the global population of just over 250 individuals.



03. Chacoan Peccary
Chacoan is the largest Marmut species (by size), an animal resembling a hog but originated from different continents and can not be tamed. Chacoan peccary was first described in 1930 based only on the fossil record, and is believed to have become extinct. Then in 1975, researchers were surprised to find one living in the Chaco region of Paraguay. Today there are approximately 3,000 individuals.


04. Lord Howe Island stick insect
Sometimes referred to as "land shrimp" or "walking sausage," the Lord Howe stick insects which are considered the world's rarest insects. Extinct since 1930 after eliminating the only known natural habitat on the island of Lord Howe, a large insect was rediscovered in 2001 when less than 30 individuals are found living under a bush on a small island of Balls Pyramid, the highest and most remote regions sea ​​stack.



05. Monito del Monte
The the monitoring del Monte is extraordinary magic, small marsupials are believed to have been extinct for 11 million years until one was found in a bamboo grove in the southern Chilean Andes. The creature is more closely related to Australian marsupials than other South American, and possibly related to the marsupials of Australia's earliest known live 55juta years ago.



06. La Palma giant lizard
Until the recent rediscovery in 2007, La Palma giant lizard was believed to have been extinct for about 500 years. Found again so recently that the IUCN Red List is the list of extinct animals. Discovered in the regions of La Palma Canary Islands, found only one individual is estimated to have 4 years of age and a foot long. New expedition to the area is currently planned in hopes of finding breeding population.



07. The Takahe
The Takahe is a native bird to fly to New Zealand considered to be extinct after the last of four known specimens taken in 1898. However, after a search effort planned carefully, the bird was rediscovered in 1948 near Lake Anau. It's very rare, strange birds remain threatened today, with only 225 individuals remaining.



08. Cuban solenodon
This strange creature that seems so rare that only 37 specimens have ever caught. It was originally discovered in 1861, but no individuals are found in 1890-1974. Unusual among mammals in that the venomous saliva, Cuba Solenodon seen most recently in 2003, an event that celebrates the individual's given name: Alejandrito.



09. New Caledonian crested gecko
Initially described in 1866 and feared extinct long, unusual gecko was rediscovered in 1994 as a result of tropical storms. The most unusual feature is the hair-like projections found above the eyes and a crest that runs from each eye to the tail. Thespecies currently being considered for CITES protection and threatened status.



10. New Holland mouse
New Holland Mouse was first discovered in 1843. It disappeared from sight for more than a century before the discovery back in the Ku-ring-gai Chase National Park north of Sydney in 1967. Funny creature is still struggling for their existence brave despite conservation efforts. One of the isolated population of Victoria was destroyed forest fires in Australia in 1983, despite healthy populations still exist in New South Wales and Tasmania.



11. Giant Palouse earthworm
Originally discovered in 1897, was declared extinct giant worm in the 1980s to three specimens excavated, most recently in 2005. Found in eastern Washington state and parts of Idaho, this ghost burrowers can dig as deep as 15 feet, grow to over 3.3 meters in length, and albino in appearance.



12. Large-billed reed-warbler
This species has been described as the least known bird. Only known from one specimen collected in 1867, and has long believed extinct. Then in Thailand in 2006, wild populations are found and confirmed to be a large-billed reed-warblers through DNA matching of the original specimen. Today most of the birds remain a mystery.



13. Laotian rock rat
This species was first discovered to be sold as meat at a market in Thakhek, Khammouane, in Laos in 1996, and is considered highly unusual and different from other living rodents was given its own family. Then in 2006, after a systematic reanalysis, the Laotian rock rat reclassified - very - to a family-owned ancient fossils are estimated to have been extinct 11 million years ago. Return trip to Laos by the Wildlife Conservation Society has revealed a few specimens, raising hopes that the animals may not be rare as once thought.




14. Burung Dodo
Bird species that can not fly, even though the taxonomy is included in the pigeon family (Columbiformes, Columbidae). The structure of tiny wings that are not allowed to lift her high in the air. This bird is probably derived from the small island of Mauritius, located some 550 miles off the east coast of Madagascar.

Dodo bird extinction since the arrival of man suspected of opening the habitat of these birds into residential areas and farmland. Humans are not alone go to the island, but bring their animals, especially dogs, cats, monkeys, and pigs that have the potential to attack and destroy these birds their nests. Rats that are pests brought together the ship that brought people to the island. The rats ate dodo eggs, stop breeding these animals. Investigations by archaeologists show evidence that not only the animals that prey on human dodo bird but also consume them.
 
 
 
 
 
 
 
 
 
 
 
 

 

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